7494-1 - Scope of WorkScope of Work
RFP #7494-1 SCADA Maintenance and Service
SPECIFICATIONS
General Instructions
The City of Denton is accepting sealed bids for SCADA Maintenance and Services. The
term of the contract will be three years, with option to extend up to two additional years.
Bidders are to state firm price per man-hour on straight time and overtime. Designate
hours and days for straight time and overtime. Time begins when the Contractor
reaches the job site and begins work. No separate payment shall be made for
mileage or travel time, this cost is to be included in the cost of service in the price
per man-hour.
Bidders shall have an office in the North Texas region and have at least 10 years of
experience in water utility SCADA development and maintenance. In addition, the
Bidders shall submit a list of SCADA system installations in the state of Texas of similar
size and complexity to the City of Denton’s Water Production system.”
The purpose of this contract is to establish agreed prices between the Contractor, and the
City of Denton. Bidders must quote firm prices that will prevail throughout the entire
term of the agreement. The successful bidder will be considered by the City of Denton as
duly obligated to perform work to the completion of this agreement and will function as
an independent contractor.
At the completion of each job performance, a record of time and materials used (with
copy on invoices), showing starting and ending times, shall be signed by a City
representative on all work performed. Job performance must reflect professional
workmanship and a reasonable number of hours charged for jobs/projects of a similar
nature and complexity.
Work assignments must be authorized by the Water Production Superintendent or his/her
designee.
Contractor services must be available nights, weekends, and holidays. All work shall be
considered routine work and performed on straight time, unless, overtime is authorized
by the Superintendent, or his/her designee.
All work deemed an emergency must be responded to by the contractor within one (1)
hour.
Contractor shall submit their material mark-up percentage. This percentage will be
applicable for all parts and materials required to complete a project or facilitate a repair.
Any parts requested by the Superintendent or his designee shall be ordered and received
by the contractor and billed monthly. Submit the percent mark-up along with proof of the
original purchase price for repair parts as part of the invoice. The percent mark-up shall
be limited to the percentage submitted on the pricing sheet of the contract. ANY invoices
submitted to the City for repair parts MUST be accompanied by receipts displaying
the ACTUAL COST for verification of the percent mark-up. The City reserves the
right to purchase any major repair parts outside this contract at the city’s discretion.
The awarded contractor shall be fully responsible for the safety of his workers and shall
provide the minimum described safety equipment as required by Occupational Safety and
Health Administration (OSHA). It is the responsibility of the Contractor to become
familiar with the provisions of regulations published by OSHA in the Federal Register; to
perform all of the responsibilities thereunder, and to indemnify and save harmless the
City of Denton from any penalties resulting from the contractor’s failure to so perform.
Upon award, a Certificate of Insurance compliant with Exhibit D Requirements, must be
submitted to the Purchasing Office and approved before services may commence. The
Certificate of Insurance must remain effective throughout the term of the contract.
This agreement may be terminated by the City at its option upon thirty (30) days notice in
writing, if the service to be furnished does not comply with the above detailed
specifications, or if the servicing of this agreement does not conform to the requirements
detailed herein.
SCADA MAINTENANCE AND SERVICES. These services include the maintenance
and upgrade of control system architecture that includes computers, network data
communications and graphical user interfaces for high-level process and supervisory
management using peripheral devices with programmable logic controllers and discrete
PID. These services include the programming of logic controllers and integration of 4-20
milliamp signalization; RTU communication programming; and other communication
equipment with the City of Denton’s SCADA GE I-FIX system. Services will be
provided on an as needed basis, as directed by and authorized by the Division
Superintendent or his/her designee.
1. Non-Emergency - services shall be to provide, to maintain and correct problems,
and repair instrumentation as requested. These services shall be scheduled on an
as needed basis, and performed at the Superintendent or his/her designee’s
direction: Cost per hour, Monday through Friday, 8:00 a.m. – 5:00 p.m.
2. Emergency - general instrumentation services shall be to provide, to maintain and
correct problems, and repair instrumentation as requested. These services shall be
scheduled on an Emergency basis and performed at the Superintendent or his/her
designee’s direction: Cost per hour, non-scheduled after hours, weekends,
holidays.
Vendor proposals shall include the following information:
1. Written description of the vendor including:
a. Office locations
b. Number of staff
c. Years in business
d. At least 4 surface water treatment plant references
e. Description of previous experience with the City of Denton
2. Answers to the following questions:
a. What SCADA software have you implemented?
b. What experience do you have with Proficy Historian software?
c. What experience do you have with Hach WIMS software?
d. Define your experience as it relates only to Water and Wastewater
Utilities? (Plant type, capacity, SCADA system, PLCs, etc
e. What is your specific experience with Scadapak, Scadapak32, Modicon
(M340 and M580), Allen Bradley (Controllogix, PLC 5 and SLC500
software), and Entivity Think N Do software?
f. Describe your experience with:
i. PLC Programming
ii. Visual Basic Scripting/Programming
iii. Microsift SQL DB
iv. Network switching devices for SCADA (Red Lion, Hirshman)
v. SCADA Communications Protocols (MBE, OPC, IGS, etc)